#include <stdio.h>

int main()
{
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");
  printf("hello world!\n");

    return 0;
}
